"God has made him both Lord and Christ, this Jesus whom you crucified"

Now when they heard this, they were cut to the heart,and they asked Peter and the other Apostles,“What are we to do, my brothers?”Peter said to them,“Repent and be baptized, every one of you,in the name of Jesus Christ, for the forgiveness of your sins

-- Acts 2:36-41

The historical complexity of Jesus' trial is apparent in the Gospel accounts. The personal sin of the participants (Judas, the Sanhedrin, Pilate) is known to God alone. Hence we cannot lay responsibility for the trial on the Jews in Jerusalem as a whole, despite the outcry of a manipulated crowd and the global reproaches contained in the apostles' calls to conversion after Pentecost. Jesus himself, in forgiving them on the cross, and Peter in following suit, both accept "the ignorance" of the Jews of Jerusalem and even of their leaders. Still less can we extend responsibility to other Jews of different times and places, based merely on the crowd's cry: "His blood be on us and on our children!", a formula for ratifying a judicial sentence. As the Church declared at the Second Vatican Council:

. . . [N]either all Jews indiscriminately at that time, nor Jews today, can be charged with the crimes committed during his Passion. . . [T]he Jews should not be spoken of as rejected or accursed as if this followed from holy Scripture.

-- CCC 597